数字农科院2.0

Simulation and Optimization Experiment of Brush-Belt-Type High-Speed Seed Dispersal Device for Maize Based on Discrete Element Method and Multi-Body Dynamics

文献类型： 外文期刊

作者： Ruzheng Wang;Youqiang Ding;Yunxia Wang;Bing Qi;Guangqiao Cao

作者机构：

关键词： ADAMS-EDEM;maize;orthogonal test;precision seeding

期刊名称： AgriEngineering

ISSN：

年卷期： 2025 年 7 卷 12 期

页码：

收录情况： ESCI（2025版）

摘要： Under the condition of high-speed maize seeding, the collision between the seeds and the restraint seeding guide device, as well as the excessively high seeding speed, will lead to a sharp increase in the coefficient of variation in the seed spacing during seeding. To address these problems, this study designed a brush-belt-type seed-guiding device incorporating an auxiliary seed-receiving mechanism (ASRM). The aim of this device is to improve the stability of the brush tube in receiving seeds through the ASRM and to stabilize the seed spacing during seeding under the constraint of the brush belt and the seeding tube. Finally, the seeding speed is balanced by adjusting the rotational speed of the brush belt to achieve zero-speed seeding. A multi-body dynamics model of the seeding machine and a discrete element model of the soil were constructed. The seeding process of the device was simulated and analyzed using the discrete element method and multi-body dynamics (DEM-MBD) coupling simulation method. The seeding height and seeding angle were used as experimental factors, and a two-factor five-level orthogonal simulation experiment was conducted. The qualified rate of seed spacing, the re-seeding rate, and the missed seeding rate were used as experimental indicators. The results show that the optimal operating parameters of this device are as follows: seeding height of 46.8 mm, seeding angle of 25.5°, qualified coefficient of seed spacing of 96.03%, missed seeding rate of 1.76%, and re-seeding rate of 3.48%. Under the optimal working parameters of the device, speed performance verification tests were conducted. The research results show that when the operating speed is 12–16 km h−1, the qualified rate of grain spacing is not less than 94.3%, the re-seeding rate does not exceed 3.92%, the missed seeding rate does not exceed 3.19%, and the damage rate does not exceed 0.19%. This study can provide a reference for the design and optimization of high-speed maize seeding devices.

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